The Bombay Stocks Exchange benchmark Sensex lost 90 points in the opening trade today. It was trading at 19052, down by over 129 points. Analysts said the loss in sensex is due to mixed trend overseas and continued selling by funds and retail investors. In other markets in Asia, Japan's Nikkei lost 0.40 percent while Hong Kong's Hang Seng index was up by 0.28 per cent cent in the morning trade today.In the US, Dow Jones Industrial Average ended 0.20 percent higher in yesterday's trade.